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The requirements of generation projects will vary depending on each individual project, and this will call for different control solutions. That is why, at Smart Energy Control Solutions (SECS) we classify each facility according to how it operates and how it interfaces with the grid, in order to define the most suitable architecture from the outset.
In this way, we can quickly identify when to deploy a Power Plant Controller (PPC), an Energy Management System (EMS) or a Microgrid Controller (MGC) and ensure that the system operates efficiently, stably and in compliance with regulations.
Classification of energy projects
We group projects into three main categories based on their relationship with the electricity grid and their operational requirements.
On-grid projects
The main objective in this type of project is to maximise the energy fed into the grid, whilst complying at all times with the requirements of the transmission system operator (TSO).
Conventional generation
Single-technology plants, such as solar photovoltaic or wind power, connected to the grid.
PPC
Compliance with regulations and control at the point of connection.
A combination of various technologies: solar, wind, storage or other resources.
PPC + EMS
Compliance with regulations and energy optimisation.
Self-consumption
It covers its own consumption and feeds any surplus into the grid when there is excess generation.
PPC1 + EMS
1In projects where this is necessary.
It covers its own consumption without feeding energy into the grid.
EMS + anti-feed-in system
Active control to limit export.
Off-grid projects
The objective in this case is to ensure system stability and minimise the levelised cost of energy (LCoE)
Solution: Microgrid Controller (MGC) + EMS
Managing the electrical stability of the isolated system: voltage, frequency, synchronisation, power sharing and priorities.
Optimising energy dispatch: when to use batteries, renewable generation, generators or controllable loads to minimise the LCoE.
Dual off-grid/on-grid projects
These facilities are capable of operating both connected to the grid and in off-grid mode.
- Ensure power is supplied to the loads.
- Feed surplus power into the grid.
- If operating with conventional generation, it may require a PPC.
- If operating with self-consumption and surplus energy: PPC.
- If operating without surplus: anti-feed-in system.
Transition management
- Minimise the LCoE as much as possible.
- Solution: MGC + EMS if a battery is present.
- Manage stability and load priorities.
Additional objective:
to manage transitions between off-grid and on-grid modes, both with zero-crossing (blackout) and without zero-crossing (seamless).Key product: Microgrid Controller (MGC).
Basic selection rules
Our classification system allows each scenario to be matched with the most suitable control solution, quickly and easily.
- If it exports to the grid: PPC.
- If it optimises energy: EMS.
- If it can operate in islanded mode: MGC.
- If it cannot export: anti export system.
This classification enables us at SECS to tailor our proposal from the outset of the project and define the most suitable control architecture for each project.
Each facility requires a specific solution, which may combine one or more of these capabilities depending on your needs.
Tell us about your project
At SECS we develop control solutions for renewable energy projects and advise you every step of the way. If you need technical support or would like to discuss a proposal for your facility, please get in touch with us.
